The Gemini house is a prototype design for a house that uses

solar energy Solar energy is radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy (including solar water heating), and solar architecture. It is an ...

and efficient design. Roland Mösl wrote the house's concept in autumn 1991. The name expresses a design goal: The real estate used should serve two purposes simultaneously -- living and generating solar electricity. Ten years later, in 2001, the (up to now) only prototype was built in

Weiz Weiz () is a town in the eastern part of the Austrian state of Styria. Population International relations Twin towns – Sister cities Weiz is twinned with: * Ajka Ajka () is a city in Hungary with about 35,000 inhabitants. It is situated ...

, a small town north of

Graz Graz (; sl, Gradec) is the capital city of the Austrian state of Styria and second-largest city in Austria after Vienna. As of 1 January 2021, it had a population of 331,562 (294,236 of whom had principal-residence status). In 2018, the popu ...

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

as part of a national exhibition about energy. The cylindric house rotates to follow the sun. It is equipped with up to 150m² of photovoltaic panels. Extreme thermal insulation and heat recovery from waste air are also included.

External links

Web site of the GEMINI house in German
Low-energy building 1991 introductions {{Austria-struct-stub